翻訳と辞書 Words near each other ・ Preah Vihear Province ・ Preah Vihear Temple ・ Pre-measure ・ Pre-medical ・ Pre-Meditated Drama ・ Pre-Mediterranean Cup ・ Pre-Millennium Tension ・ Pre-Modern Aliyah ・ Pre-modern coinage in Sri Lanka ・ Pre-modern human migration ・ Pre-money valuation ・ Pre-mortem ・ Pre-Motional Songs ・ Pre-movement time ・ Pre-Māori settlement of New Zealand theories ・ Pre-Nectarian ・ Pre-nominal letters ・ Pre-Nuragic Sardinia ・ Pre-order ・ Pre-owned asset tax ・ Pre-packaged insolvency ・ Pre-Parliament (Armenia) ・ Pre-Parsian style ・ Pre-Pastonian Stage ・ Pre-pharmacy ・ Pre-play attack ・ Pre-popping ・ Pre-Portuguese Christianity in Goa ・ Pre-Pottery Neolithic ・ Pre-Pottery Neolithic A Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Pre-Nectarian ： ウィキペディア英語版 Pre-Nectarian The Pre-Nectarian Period of the lunar geologic timescale runs from 4533 million years ago (the time of the initial formation of the Moon) to 3920 million years ago, when the Nectaris Basin was formed by a large impact. It is followed by the Nectarian period. ==Description== Pre-Nectarian rocks are rare in the lunar sample suite; they are mostly composed of lunar highlands material which have been heavily churned, brecciated, and thermally affected by subsequent impacts, particularly during the Late Heavy Bombardment that marks the approximate beginning of the Nectarian Period. The primary Pre-Nectarian lunar highland material is dominated by the rock type anorthosite, which suggests that the early stage of lunar crustal formation occurred via mineral crystallization of a global magma ocean. This geologic period has been informally subdivided into the Cryptic Era (4.533 - 4.172 Ga ago) and Basin Groups 1-9 (4.172 - 3.92 Ga ago), but these divisions are not used on any geologic maps. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pre-Nectarian」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.